Count bacterial colonies accurately and quickly with this colony counter. Adjustable dish holder centers round dishes up to 100 mm, and square culture plates up to 100 mm x100 mm. Darkfield illumination ensures even, glare-free viewing. Light is spread uniformly over the entire culture plate or dish. Colonies are bright and easily distinguished. Adjustable magnification lens rotates a full 360 degrees. Tilt leg for ergonomic use. Optional 1.5X auxiliary lens fits over standard lens to magnify to 3X. 110V. 1-year warranty.